Table for tinning zinc and other metals



(No Mode!) l l J. K. CROWLEY. l

TABLE FOR TINNING ZINC AND' OTHER METALS.

. No. 380,248. Patented MarfZ'., 1888.(

i i UNITED STATES PATENT OFFICE.

JAMES K. CROWLEY, or ANsONIA, CONNECTICUT.

TABLE FOR TINNING ZIINC ANDOTHER NlETALS.

SPECIFICATION forming part of Letters Patent No. 380,24'8, dated March 27, 1888.

Application filed August 20, 1887. Serial IIo. 247,412. (o model.)

useful Improvements in Tables for Tinning Zinc and other Metals; and I do hereby declare the following to Abe a full, clear, and exact description of the invention, such as'will enable others skilled in the art to which it appertains to make anduse the same.

My invention has for its object to produce a table for the above-described purpose whichv shall be simple in construction, easy to operate, and at the same time economical in cost and durable. l

With these ends in View I have devised the novel construction of which the following description, in connection with the accompanying drawings, is a specification, numbers'being used to denote the several parts.

` Figure 1 is a perspective illustrating my improved table in use, the lower portion of the sheet of metal being broken away to show the construction of the table; and Fig. 2 is a crosssection corresponding therewith.

It is ofcourse well understood by those familiar with the art that zinc and various other metals are tinned by the application of melted tin thereto, which is spread upon the surface of the foundation metal with a brush.

In applying theinolten tin to zinc and other soft metals serious difcultyhas heretofore been experienced, owing to the fact that the heat of the melted tin was at. times 4 sufficient to partially fuse the zinc or other foundation metal.

This objection I wholly overcome by the novel construction of table, which I will now proceed to describe.

1 denotes frame-work rby which the table is,

supported, which may be of any preferred construction. v p

2 denotes cross-,pieces which are convexed from end to end, as clearly shown in the draw- 1n s.

denotes the inner side pieces, which are attached to the ends of the cross-pieces, 4 the bottom, and 5 the outer side pieces. The two sets of side pieces and the bottom form troughs on opposite sides ofthe bed. The latter consists of a series of slats, 6, which are secured to the cross-pieces. v

The tables may of course be suitable size.

Tinned zinc as Ordinarily placed upon the market is prepared iu sheets seven feet long by two and one-half to three and one-halfV feet wide. The tables, therefore, for preparing tinned zinc are made of just sufficient length so that thel edges of the piece will pass over the inner side strips and the lower end will just reach the ends of the slats. l

made of any 7 is aloose clamping-piece curved on its un- Y der side to correspond with the curvature of the table proper. -This clamping-piece is operated by a cam-lever, 8, which, when turned to the position shown, clamps piece 7 down firmly-upon the piece of metal. f.

It will be observed that the edges of the bottom in front of the table proper converge toward each other, and that the side pieces likewise converge, so that a spout is formed at the end. This is in order to convey themolten o metal that does not adhere to the'zinc or otherfoundation metal into a suitable receptacle placed to receive it.

It will be noticed that the table is set at an incline, so that the waste metal will vrun oft' i quickly. In use the sheet of metal to be tinned is placed upon the table and locked in position by the clamping-pieceand camlever.o The molten metal is then poured upon it from a of the table and over Athe lower end of the v sheet of metal down upon the bottom, and is conveyed by the trough into ythel receptacle placed to receive it. o

Should it be desired to tin the opposite side of the sheet, it is changed end for end, thus reversing it, and the operation repeated as before. The exact shape and size of thel slats which form the table proper are not of the essence of my invention.

It is of course required that they shall not be so large or so far apart as to permit the sheet of zinc or other'foundation metal to sink lsuitable ladle or hand-furnace and quickly laid Y in between them, and, on the other hand, yit is l necessary that there should be sufficient space between them to permit free circulation of air, there being no 'bottom under vthe slats. The slats are preferably made round or half round, as shown in the drawings. In practice I have IOO obtained perfect results by making them an inch or an inch and a half in diameter at the widest place and have placed them about half an inch apart. This, however, is a matter that may be safely trusted to the judgment of the builder or user.

In using my improved tables constructed as described I have obtained the most perfect results, and have experienced no diculty whatever from partial fusion of thefoundationsheet in Iapplying the molten tin.

It will of course be understood that the details of construction may be varied to an almost unlimited extent without departing from the spirit of my invention.

I claim- 1. A table for tinning sheet metal, consisting of suitable framework, cross-pieces convexed from end to end, and a bed consisting of a series of rounded slats separated from each other to permit free circulation of air under the sheet being tinned.

2. In a table for tinning sheet metal, the combination, with a bed made of slats and inclined from end to end and convexed from side to side, of troughs at the sides of the bed and a spout at the lower end thereof, whereby waste metal is carried away.

In testimony whereof I aix my signature in presence of two witnesses.

JAMES K. CROWLEY. Witnesses:

D. C. HULL, W. J. LOZELL. 

